​Lipitor,a heart medication with few substitutes,should have an own-price elasticity of demand that is:

A) ​Relative elastic
B) Relatively inelastic
C) Perfectly inelastic
D) ​Perfectly elastic

The development of additive manufacturing technology (3-D printers) is expected to lower prices by doing which of the following?

A) reducing the cost of producing blueprints for manufactured goods
B) promoting greater economies of scale in manufacturing
C) reducing the demand for manufactured goods
D) reducing both large fixed set-up costs and transportation costs